Merino wool blend Thick terry construction under foot for added warmth 13cm cuff About CastelliCastelli traces its roots back to a fine tailor (Vitore Gianni) in the heart of Milan, founded in 1876. Through the years, Vittore Gianni clothed AC Milan, Juventus and the Milan Ballet. The first cycling clothing was made in the 1910\\\"s for the world champion and five-time Giro champion Alfredo Binda. Castelli innovated the first aerodynamic Lycra shorts in 1977 which were used in racing and for public sales. Castelli\\\'s single-minded mission Is to make the most innovative clothing for the cyclists seeking maximum performance. Over the past decade, Castelli have led essentially every performance innovation in cycling clothing. Castelli Women\\\'s Sock SizingS/ML/XLShoe SizeCycling Socks Buying Guide